Slower / Sluggish / Weak Bottom End / Throttle Response...doesnt seem to come to life until 2k rpm...even then, it's just not the same as it was...

Poor / slow Turbo Spool....but does get to 35-40psi....used to get to 40 real easy, now not as easy...

Starts right up, sounds reasonable (ad150 made it quieter), idle's same as always...no throwing any codes

Did notice EGT's climb from 400 to 450-500 at a stop (dont recall it used to do that)

I have been having an issue with Quad FP/RP guage....it appears the rp reading is ok (maxing at 25kpsi, idle at 7-800psi)....installed AD150 today (this isnt the cause, was happening before)

It's not the fuel filter (replaced the old one 3 days ago, and there's a new one with the AD150)

I'm using the smarty TnT (non R version...havent reved any higher than stock....)...when i first put it on, truck ran great, no issues...have tried different levels (max level was 7, and not thrashing)....now at the same level that it worked awesome at before, it's as explained above

I'll check the air filter / intake tomorrow...what else do i check? (i'm not a mechanic, so the tuff stuff i'll have to pay someone)...

Thanks in advance

 

weak injector maybe?

 

ive been told before with problems take out your tune and I would take off that gauge and go from there. my truck is not very impressive without a downloader. it runs ok but about the same way you describe yours. its night and day. is your truck throwing any codes? theres a really good chart on here to reference those to.

 

No codes of any kind....already checked that one....

Yeah, it's a dog without any tune...always has been....but i will try it stock just to see how she does...